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874天前#include <graphics.h> |
#include <stdlib.h> |
#include <stdio.h> |
#include <conio.h> |
int main(void) |
{ |
/* request auto detection */ |
int gdriver = DETECT, gmode, errorcode; |
int color, maxcolor, ht; |
int y = 10; |
char msg[80]; |
/* initialize graphics and local variables */ |
initgraph(&gdriver, &gmode, ""); |
/* read result of initialization */ |
errorcode = graphresult(); |
if (errorcode != grOk) /* an error occurred */ |
{ |
printf("Graphics error: %s\n", grapherrormsg(errorcode)); |
printf("Press any key to halt:"); |
getch(); |
exit(1); /* terminate with an error code */ |
} |
maxcolor = getmaxcolor(); |
ht = 2 * textheight("W"); |
/* display the default colors */ |
for (color=1; color<=maxcolor; color++) |
{ |
setcolor(color); |
sprintf(msg, "Color: %d", color); |
outtextxy(1, y, msg); |
y += ht; |
} |
/* wait for a key */ |
getch(); |
/* black out the colors one by one */ |
for (color=1; color<=maxcolor; color++) |
{ |
setpalette(color, BLACK); |
getch(); |
} |
/* clean up */ |
closegraph(); |
return 0; |
} |
